[jira] [Created] (SPARK-29651) Incorrect parsing of interval seconds fraction

["Maxim Gekk (Jira)" <ji...@apache.org>]

Maxim Gekk created SPARK-29651:
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             Summary: Incorrect parsing of interval seconds fraction
                 Key: SPARK-29651
                 URL: https://issues.apache.org/jira/browse/SPARK-29651
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.4.0, 2.3.0, 2.2.0, 2.1.0, 2.0.0
            Reporter: Maxim Gekk


* The fractional part of interval seconds unit is incorrectly parsed if the number of digits is less than 9, for example:
{code}
spark-sql> select interval '10.123456 seconds';
interval 10 seconds 123 microseconds
{code}
The result must be *interval 10 seconds 123 milliseconds 456 microseconds*

* If the seconds unit of an interval is negative, it is incorrectly converted to `CalendarInterval`, for example:
{code}
spark-sql> select interval '-10.123456789 seconds';
interval -9 seconds -876 milliseconds -544 microseconds
{code}
Taking into account truncation to microseconds, the result must be *interval -10 seconds -123 milliseconds -456 microseconds*



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